10. an equation of the tangent line to the graph of f(x) = sin x at 2 = 2 is
(a) 3x + 6y = 47 – 3v3
(b) 3x + 6y = 21 +373
(c) 6y - 3x = 27 – 313
(d) 6y - 3x = 41 - 3v3

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?